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신휘범 慶尙大學校 工科大學 自動化및컴퓨터應用技術硏究所 1994 自動化 및 컴퓨터應用技術 Vol.1 No.1
전압원 인버터의 전류제어를 위한 새로운 방식의 예측형 전류제어기가 제안되고, 이를 유도 전동기의 자속기준제어를 위한 회전자자속 추정기 설계에 이용한다. 본 전류제어기로부터 최소화된 전류맥동 및 최소화된 offset 전류를 얻을 수 있으며, 또한 회전자 저항변화에 강인한 자속 추정기로부터 파라메타에 둔감한 자속기준제어를 얻을 수 있다.
3상 유도전동기 구동을 위한 전압원 인버터의 새로운 과변조 PWM 기법
신흥교,박종규,김봉식,신휘범 慶尙大學校 工科大學 自動化및컴퓨터應用技術硏究所 1997 自動化 및 컴퓨터應用技術 Vol.4 No.1
The novel PWM(pulsewidth modulation) strategy of three-phase voltage source inverter in the overmodulation range is proposed. Generally, the space vector PWM strategy in the overmodulation range is widely utilized due to its simple and effective digital implementation and increased voltage transfer ratio. A unique algorithm manages the transition form the onset of overmodulation to six-step operation. This proposed technique maximizes the utilization of the dc-link voltage and maintain the voltage linearity between the reference and output voltages, and it decreases the necessary memory quantity for the look-up table of the angle.
고정자 전압오차의 적분궤환을 이용한 유도전동기의 회전자 자속관측기 설계
愼輝範 慶尙大學校生産技術硏究所 1993 生産技術硏究所論文集 Vol.9 No.-
The rotor flux observer is proposed for an induction motor controlled by the direct field oriented control technique. The stator voltage vector is predicted as an output vector and is compared with the measured stator voltage vetor. The stator voltage error is integrated and fed back to the rotor flux observer. With the proposed observer, the fast error convergence rate can be obtained and the estimation error due to the parameter variations can be reduced. Thus, the torque response can be largely improved.
다상 교호 승압컨버터의 인덕터 커플링에 따른 소신호 교류 해석
장은승,신휘범 慶尙大學校 經營行政大學院 2004 工學硏究院論文集 Vol.20 No.-
This paper addresses the small-signal ac analysis of the multi-phase interleaved boost converter with the coupled inductors operated in the continuous inductor current mode. The analytical expressions for the transfer functions of interest are derived for various inductor couplings. The dynamic characteristics are analyzed according to the inductor couplings and verified experimentally.
강익호,김정욱,신휘범,이정훈,고상호 慶尙大學校生産技術硏究所 1997 生産技術硏究所論文集 Vol.13 No.-
In this paper, the dynamics of actuators for generating the input of plants is considered in a design of the variable structure systems. While the input for plants is usually implemented by means of a certain actuator, the actuator dynamics is not incorporated in most of the VSS researches until now. The control algorithm of a VSS incorporating actuator dynamics is presented. and the simulation is given the usefulness of the algorithms.
Modeling and Parameter Identification of Coal Mill
Hwi-Beom Shin,Xin-lan Li,In-Young Jeong,Jong-Man Park,Soonyoung Lee 전력전자학회 2009 JOURNAL OF POWER ELECTRONICS Vol.9 No.5
The coal mill used in the coal-fired power plants is modeled in view of the controller design rather than the educational simulator. The coal mass flow and the outlet temperature are modeled by reinvestigating the mass balance and heat balance models physically. The archived data from a plant database are utilized to identify the model parameters. It can be seen that the simulated model outputs are well matched with the measured ones. It is also expected that the proposed model is useful for the controller design.
딥러닝 기반 라이다 오도메트리를 활용한라이다/관성 복합 항법 알고리즘 연구
손현진,고은학,성상경 제어·로봇·시스템학회 2020 제어·로봇·시스템학회 논문지 Vol.26 No.9
As lidar has become one of the primary sensors for autonomous robots, interest in lidar-based sensor fusion and navigation has increased. In this paper, we propose an integrated navigation algorithm that combines an inertial navigation system and deep learning-based lidar odometry. We first developed a deep learning neural network for lidar odometry estimation. The network can estimate the relative pose by using consecutive lidar scans as an input. We then designed an extended Kalman filter that uses inertial sensors for the prediction step and lidar odometry for the correction step. To demonstrate the estimation accuracy of the algorithm, we used both the KITTI dataset and a drone flight simulator. .
Modeling and Parameter Identification of Coal Mill
Shin, Hwi-Beom,Li, Xin-Lan,Jeong, In-Young,Park, Jong-Man,Lee, Soon-Young The Korean Institute of Power Electronics 2009 JOURNAL OF POWER ELECTRONICS Vol.9 No.5
The coal mill used in the coal-fired power plants is modeled in view of the controller design rather than the educational simulator. The coal mass flow and the outlet temperature are modeled by reinvestigating the mass balance and heat balance models physically. The archived data from a plant database are utilized to identify the model parameters. It can be seen that the simulated model outputs are well matched with the measured ones. It is also expected that the proposed model is useful for the controller design.
Generalized analysis of multi-phase interleaved boost converter
Shin, Hwi-Beom,Park, Jong-Gyu,Chang, Sung-Dong,Choi, Hyun-Chil Taylor Francis 2005 International Journal of Electronics Vol.92 No.1
<P> This paper presents the generalized and explicit expressions for evaluating the performance of the multi-phase interleaved converters, such as conversion ratio, efficiency and the ripples of input and inductor currents. Especially, the output voltage ripple is analysed in depth. Furthermore, the generalized transfer functions of interest are presented and the dynamic characteristics are analysed. The generalized analysis of converter performance is verified through the experimental and simulation results.</P>